Sparking-device governor for gasolene-engines.



No. 733,752. PATBNTE1 JULY 14, 1903.

0. J. ROOT. SPARKING DEVICE GOVERNOR FOR GASOLENE ENGINES.

No MODEL AWL-NATION FILED DBQ. 16,,1902. 2 SHEETS SHEET 1 attain/:3;

ms NORRS Pawns co PHOTO-LVYHO, WASHINGTON. n.c.

No. 733,752. Y PATENTED JULY 14, 1903.

0. J. ROOT.

SPARKING DEVICE GOVERNOR FOR GASOLENE ENGINES.

APPLICATION FILED DBO. 16.1902. NO MODEL. 2 SHEETS-SHEET 2.

ms Norms PEYERS cu, PNOTD'LITHOY. wuumammu c.

ihtiTsD STATES Patented July 14, 1903.

PATENT OFFICE.

ORLANDO J. ROOT, OF EAST MOLINE, IIiLINOIS.

SPECIFICATION forming part of Letters Patent No. 733,752, dated July 14,1903.

Application filed December 16, 1902. Serial Nb.135,426. uremia.)

To 0% whom it may concern.-

Be it known that I, ORLANDO J. ROOT, a citizen of the United States,residing at East Moline, in the county of Rock Island and State ofIllinois, have invented certain new and useful Improvements inSparking-Device Governors for Gasolene-Engines, of which the followingis a specification.

This invention relates to gasolene or vapor engines, and pertainsparticularly to sparking devices of explosive-engines.

The prime object of this invention is to provide means for tripping andtiming the sparker-igniter hammer of eXplosive-eginnes from the ordinarypush-rod of such engines.

A further object of the invention is to provide mechanism to hold asparking device inoperative and to prevent sparking when an engine isrunning idle.

A still further object of the invention is to provide a break-sparkmechanism combined with a governor or an automatic device to hold saidmechanism against sparking except when a charge or explosion isrequired, whereby an engine will be prevented from sparking whilerunning idle.

. As far as known to me in the form of sparkers herein shown thewell-known cam-operated vertical push-rod of a sparking device has onlybeen used to push down the exhaustvalve of an engine, which is done bythe raised portion of a cam of the ordinary form employed in thevertical type of engines engaging a roller carried by an arm connectedto the said vertical push-rod. It is my purpose to have said rod whencombined with my device perform the additional function of preventingsparking during the idle running of the engine except when a charge oran explosion is required.

To this end my invention consists, first, in an adjustable tripscrewpositioned adjacent a push-rod and an igniter spring-trip secured to therod and projecting between the rod and the said screw, so as to operatethe sparkerigniter hammer; second, in acam of peculiar shape, acatch-lever pivoted in relation to a roller-arm attached to a push-rod,so, that an upward movement of said arm under pressure of the cam onsaid roller will permit a dog or pawl of the catch-lever to catch underthe arm and hold'it to its highest elevation,

and, third, .in an automatic device operated from the main shaft of theengine to throw the dog or pawl under the arm simultaneously with thearm reaching its highest point of elevation. r

In the accompanying drawings, forming part of this application, Figure 1is an elevation of a vertical engine embodying my invention with one ofthe fly-wheels removed. Fig. 2 is a detail elevation of theigniter-hammer, exhaust-screw, trip-spring, and push-rod partly brokenaway. Fig. 3 is asectional view of the parts shown in Fig. 2, taken onthe plane indicated by the dotted line a; to. Fig. 4 is a detail innerside elevation of the balance or fly wheel carrying the device forvention will be herein described.

The push-rod 1 is operated by a cam 2 working against a roller 11,carried by a pivoted arm 3, on which the push-rod is seated, and saidcam is operated by suitable'interior gearing from the main shaft 1 ofthe engine. Heretofore the push-rod 1 has only been'used to push downthe exhaust-valve at the proper time by the raised portion of the cam 2elevating the arm 3; but inasmuch as the spark is timed at the oppositeend of the stroke 'from the exhaust-valve opening I am enabled to make adouble use of the push-rod-viz., the ordinary use of said rod and itsuse to hold the sparking device inactive. To produce this use of thepush-rod, I provide it with an igniter spring-trip 4, adj ustablysecured to the rod and preferably composed of toolsteel and having abeveled head 5, tapering from the top end of the spring downwardly andoutwardly and terminating in a shoulder 6. The trip-plate 7 is providedwith a setscrew 8, set on an incline or at an angle to the push-rod andagainst which the beveled head 5 works perpendicular thereto, and theshoulder 6 is engaged by the sparker-igniter hammer 9. i The screw Siscapable of adjustment so that the timing of the trip of theigniter-hammer may be varied as desired or as occasion may demand.

It is obvious that the spring-trip 1 is applicable to any form of therod used for timing the sparker-trip and that said spring-trip is stiffenough to retain its proper positon when raising the igniter-hammer, andyet it is flexible enough to spring past the hammer on its downwardstroke. To prevent the above-noted mechanism from working except when aspark is desired, I remove a portion of the cam 2 or cut it away, so asto form a flat surface 10 about opposite its highest portion, so thatthe cam will pass under the roller 11 without working the arm 3 when thelatter is in raised position. To hold the arm 3 and push-rod 1 fixed inraised position, a plate 12, having a notch 13, is secured upon theunder side of the arm, and a catch-lever 14 is pivoted at 15 and has astrike-plate 15 andadog 16 to engage the notch 13. Thedog is held inretracted position by aspiral spring 17, and the lever 14 isautomatically operated to throw the dog under the arm 3 and into thenotch 12 simultaneously with the arm reaching its highest elevation by adevice carried by one of the fiy-wheels 18 of the engine, which devicecomprises a lever 19, having a shoe 20 and having one end pivoted to oneof said wheel-spokes at 21 and the other end provided with a Weight 22,having an ear 23, to which ear one end ofaspiral spring 24 is attached,and the other end of said spring is adj ustably secured to anotherofsaid wheelspokes by a screw-rod 25 and nut 25*.

Referring to the modification shown in Fig. 7, a notch 26 is made on theunder side of the roller-arm 27, and in lieu of the spring controlledshoe-lever hereinbefore referred to a projection or strike-plate 28 issecured to the engine-shaft to throw the catch-lever dog into the notch26.

The operation is as follows: Upon the upward stroke of the push-rod theshoulder of the springtrip raises the hammer and is pushed therefrom byset-screw 8 engaging the beveled head 5, said set-screw being adjustedso as to vary the length of time that the shoulder shall hold thehammer, and upon the downward stroke of the rod the flexibility of thetrip permits it to spring over the hammer without operating it.Simultaneously with the raising of the arm 3 and push-rod l the shoe 20strikes the plate 15 of the catch-lever and pushes it outwardly, whichforces the dog under the arm 3 and into the platenotch, so that the saidlever catches and holds the arm and push-rod in raised position andpermits a continued running of the engine, with the sparking deviceidle, as long as the lever holds said arm up. So long as the speed ofthe engine is normal the shoe does not operate the catch-lever; but inexcessive speed of the engine the shoe is swung outward against thestrike-plate of said lever, which throws the dog under the arm 33, withresults as hereinbefore stated. When the speed of the engine has beenthus reduced, the dog is retracted by the spring 17.

It will be seen that the action of the springtrip on the trip-hammer canbe varied as desired by simply adjusting the igniter setscrew so thatthe latter will shorten or prolong the holding of the hammer by theshoulder of the spring-trip, and thereby time the explosion as desired.

It is obvious that a very slight movement of the push-rod is possiblewhile the governor is in operation, that much wear on the parts of thesparking mechanism is avoided, and that while a continued running of theengine is not interfered with the sparking device is automatically putout of action and held so by the governor.

It will be seen that the tension of the shoelever on the catch-lever maybe varied as desired by adjusting the screw-rod of the shoespring andthat my improved devices may be readily applied to engines of variousforms.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In an explosive-engine, the combination, with a sparker-hammer, and aspring-trip attached to and working in unisonwith a push or similarengine rod to raise the hammer and having a beveled head, of a set-screwper pendicular to and engaging the beveled head to time the operation ofthe hammer.

2. In an explosive-engine, the combination, with a push-rod, anigniter-hammer, and a trip-plate, of a set-screw adjustable on thetrip-plate at an angle to the rod, and a springtrip having one endsecured to the rod and the other end having a beveled head perpendicularto and in engagement with the setscrew.

3. The combination, with a push-rod, and an igniter-hammer, of aset-screw inclined to the rod, and a spring-trip having one end socuredto the rod and extending parallel with the latter and having a shoulderto work the hammer, and the beveled or inclined triphead working on theset-screw perpendicular thereto.

4:. In a sparking device for explosive-engine, the combination of asparker-hammer, an igniter-trip set-screw, a spring-trip having abeveled portion perpendicular to the screw and terminating in a shouldercontrolled in its action on the hammer by the set-screw, and a push-rodhaving said spring trip secured thereto parallel therewith.

5. The combination, with a push-rod, an igniter-hammer, an igniter-trip,and aspringtrip carried by the rod parallel thereto and having a beveledfree end terminating in a shoulder to work the hammer, of a dog pivotedadjacent the main shaft of the engine and having a strike-plate, a shoeoperated by said shaft to strike said plate and throw the dog under therod, and a spring to relene-engines, the combination, with a pushrod, aroller-arm supportingthe rod,'and a cam to operate the arm and having areduced'portion, of a dog pivoted to the face of the engine and having astrike-plate, a spring-controlled lever carried by the engine fiy-wheeland having a lateral shoe to engage the said plate and automaticallythrow the dog under the roller-arm simultaneously with the said ar'mreaching its highest elevation, and a spring to retract the dog.

7. The combination, with a gasolene-engine, having a break-spark device,a pivoted arm carrying a roller, a push-rod supported upon the arm,a camworking against the roller to raise the arm, aspring-trip secured to andstandingparallel with the push-rod and hav- 2o ing a beveled shoulderedhead, and a setscrew perpendicular to the said head to control thespring movement of the trip, of a notched plate upon said arm, a dogpivoted below said plate and having a strike-plate, a weightedspring-controlled lever pivoted to the engine fly-wheel, a lateral shoeon this lever between its pivoted and weighted ends, said shoe engagingthe strike-plate to throw the dog into engagement with the notched platesimultaneously with theraising of the roller-arm, and a spring toretract the dog.

In witness whereof I hereunto set my hand v in the presence of twoWitnesses. i

ORLANDO J. ROOT.

Witnesses:

WILLIAM S. WRIGHT, EDITH A. Roo'r.

